<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd(1,'0')">添加权限</el-button>
        </div>
        <el-table border :data="list" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template slot-scope="scope">
              <!-- 按业务要求，只有是页面级别的节点（type=1），才有增加 -->
              <el-button v-if="scope.row.type===1" type="text" @click="hAdd(2,scope.row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(scope.row.id)">编辑</el-button>
              <el-button type="text" @click="hDel(scope.row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>
    <el-dialog
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :visible.sync="showDialog"
      :title="isEdit?'编辑权限点':'添加权限点'"
      @close="resetForm"
    >
      <el-form ref="form" :rules="rules" :model="formData" label-width="100px">
        <el-form-item label="权限名称" prop="name">
          <el-input v-model.trim="formData.name" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model.trim="formData.code" />
        </el-form-item>
        <el-form-item label="权限描述" prop="description">
          <el-input v-model.trim="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="启用"
            active-value="1"
            inactive-text="不启用"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right;">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>
<script>
import { tranListToTreeData } from '@/utils'
import { getPermissionList, addPermission, getPermissionDetail, updatePermission, delPermission } from '@/api/permisson'
export default {
  name: 'Permissions',
  data() {
    const validCode = (rule, value, callback) => {
      // 增加时的校验，code不能重复
      let existCodeList = this.originList
      if (this.isEdit) {
        // 编辑时的校验：code能取自己,existCodeList中要排除当前项
        existCodeList = this.originList.filter(item => item.id !== this.formData.id)
      }
      existCodeList.map(item => item.code).includes(value) ? callback(new Error(value + '已经占用')) : callback()
    }
    const validName = (rule, value, callback) => {
      // 增加时，同级不重复
      let existNameList = this.originList.filter(item => item.pid === this.formData.pid)
      // 编辑时name可以取自己，existNameList中要排除当前项
      if (this.isEdit) {
        // eslint-disable-next-line eqeqeq
        existNameList = this.originList.filter(item => item.id != this.formData.id && item.pid == this.formData.pid)
      }
      console.log(existNameList)
      existNameList.map(item => item.name).includes(value) ? callback(new Error(value + '已经占用')) : callback()
    }
    return {
      rules: {
        name: [{ required: true, message: '名称不能为空', trigger: 'blur' }, { validator: validName, trigger: 'blur' }],
        code: [{ required: true, message: '表格不能为空', trigger: 'blur' }, { validator: validCode, trigger: 'blur' }],
        description: [{ required: true, message: '表格不能为空', trigger: 'blur' }]
      },
      isEdit: false,
      list: [],
      originList: [], // 为了方便校验，而准备的数据
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    async loadPermissionList() {
      try {
        const res = await getPermissionList()
        console.log('获取权限数据', res)
        this.originList = res.data.map(({ id, pid, name, code }) => ({ id, pid, name: name.trim(), code }))
        this.list = tranListToTreeData(res.data)
      } catch (err) {
        console.log(err)
      }
    },
    hAdd(type, id) {
      this.isEdit = false
      this.showDialog = true
      // 记录当前添加的关键信息
      this.formData.type = type
      this.formData.pid = id
    },
    // 点击确认确认事件
    async doAdd() {
      try {
        const res = await addPermission(this.formData)
        console.log(res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success('添加成功')
      } catch (err) {
        console.log(err)
        this.$message.error('添加失败')
      }
    },
    hSubmit() {
      this.$refs.form.validate(valid => {
        if (valid) {
          this.isEdit ? this.doEdit() : this.doAdd()
        }
      })
    },
    // 当弹层关闭时，重置表单
    resetForm() {
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      // 清空检验
      this.$refs.form.resetFields()
    },
    // 删除
    hDel(id) {
      this.$confirm('确定要删除吗').then(() => {
        this.doDel(id)
      }).catch(() => {

      })
    },
    async doDel(id) {
      try {
        const res = await delPermission(id)
        console.log(res)
        this.loadPermissionList()
        this.$message.success('删除成功')
      } catch (err) {
        console.log(err)
        this.$message.error('删除失败')
      }
    },
    // 编辑
    async hEdit(id) {
      this.isEdit = true
      // 根据id获取详情
      const res = await getPermissionDetail(id)
      console.log(res)
      this.formData = res.data
      this.showDialog = true
    },
    async doEdit() {
      try {
        const res = await updatePermission(this.formData)
        console.log(res)
        this.showDialog = false
        this.loadPermissionList()
        this.$message.success('修改成功')
        // 保存数据
      } catch (err) {
        console.log(err)
        this.$message.success('修改失败')
      }
    }

  }
}
</script>
